The design of leading marks for the 300 000 DWT approach channel of Lianyungang port needs to give an overall consideration to the navigation needs of vessels under the conditions of current and long-term channel development. The outer channel is 35.6 km long and extends its axis to the direction of Qitai moutain, where the terrain is higher and thus leading marks should not be arranged far apart due to topographic restrictions, they can only meet the navigation need at key sections; Xuwei channel is 20.1 km long and the terrain along its axial extension direction is flat with better construction conditions, while the beacon tower is high.